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Chapter 5, Reference (Alphabetical)
Memory Cards
Three types of memory cards are available:
• Static Random Access Memory (SRAM)
• SRAM cards have read and write capability. SRAM cards can be programmed and
read with the test set.
• One-Time Programmable (OTP)
• Once programmed with a suitable card programmer, OTP cards have read-only
capability. OTP cards can be read with the test set, but cannot be programmed with
the test set.
•Flash Memory
• Flash cards have read and write capability. They can only be written to, or
programmed with a suitable card reader/programmer. Flash memory cards cannot
be written to, or programmed with a test set. Flash memory cards can be read by the
test set.
NOTE: Hewlett-Packard-supplied software code and Hewlett-Packard procedure and library files
are typically supplied on either OTP cards or flash cards. Flash cards can be distinguished
from OTP cards by a small write protect (WP) switch in the end of the flash cards. SRAM
cards also have a write protect or safe switch in the end of the card, but they also use a
battery. Software and procedure/library files stored on a flash card cannot be overwritten
by a test set regardless of the position of the write protect (WP) switch.
The software memory card can be removed after the program is loaded into the
test set memory. The program will remain in memory after a power-down/power-
up cycle, until a new program is loaded. Loading a new program will replace the
existing program.